Toomoneth is an island off Oralûth's southeast edge.
In the Creation War (1486 DE - 8777 DE), the primordial attack on the Šadullu landmass began with a ripple of entropy that fanned outward for thousands of miles. A remote area of the time, a Covenant garrison on Toomoneth were the only ones affected by this warping energy. On 1501 DE, this energy changed a contingent of wood elves serving under Corellon. They all became aberrations, they had aspects of their former-selves and those of insects. The Covenant made some effort in reversing the effects, but with the primordials attacking Straiden, resources were needed in more pressing area. A period of insect-level thinking followed, with the predators dominating the island. Around 1805 DE, it is said their humanoid thinking came back to them. A famine brought this on, a product of over-hunting. They pondered the churning water and how to get across, some went by using their web balloons, the rest, remembering what they once were, got to work building boats and then planning how to save their race by game management. Hundreds of years later, the Arachnoids having made a home on Oralûth, returned to their beginning on Toomoneth, building the elven named settlement Valdirinwë.